Synthesis of acyloxyl pyrazolines by copper-mediated aminoacyloxylation of unsaturated ketohydrazones

An efficient copper-mediated aminoacyloxylation of unsaturated hydrazones has been developed. Copper carboxylates serve as both reaction promoters and carboxylate sources in these easily conducted reactions. This method provides straightforward access to diversely useful acyloxyl pyrazolines.

Coordination polymers based on copper carboxylates and angular 2,5-bis(imidazol-1-yl)thiophene (thim2) ligand: sequential structural transformations

A 1D helical chain (1) and one pot sequential transformation of 1D zigzag (2) chain in A(2)-B(3)-C(4) manner have been reported. Magnetic behaviour for CPs 1–3 have been investigated.

Microdistribution of Some Copper and Zinc Containing Waterborne and Organic Solvent Wood Preservatives in Spruce Wood Cell Walls

Summary The microdistribution of copper and zinc in the cell walls of spruce wood treated with water borne copper chloride, ammoniacal copper octanoate, ammoniacal zinc octanoate and with copper carboxylates dissolved in an organic solvent was studied using transmission electron microscopy with X-ray microanalysis. The highest content of copper and zinc was measured in cell corners and middle lamellae, that is in the constituents with the highest proportions of lignin. The same feature was observed also in the case of copper carboxylates dissolved in white spirit. On the basis of these results it was presumed that, within wood, lignin functional groups are preferential adsorption sites for transition metal ions irrespective of the carrier solvent.